US10020149B2 - Control apparatus for controlling a switching element - Google Patents

Control apparatus for controlling a switching element Download PDF

Info

Publication number
US10020149B2
US10020149B2 US15/248,456 US201615248456A US10020149B2 US 10020149 B2 US10020149 B2 US 10020149B2 US 201615248456 A US201615248456 A US 201615248456A US 10020149 B2 US10020149 B2 US 10020149B2
Authority
US
United States
Prior art keywords
switching element
control apparatus
accordance
load stage
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US15/248,456
Other languages
English (en)
Other versions
US20170076891A1 (en
Inventor
Franz Dold
Jonas WEIDENMULLER
Stephan HENNEBERGER
Frederik BEHRE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sick AG
Original Assignee
Sick AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sick AG filed Critical Sick AG
Assigned to SICK AG reassignment SICK AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOLD, FRANZ, Behre, Frederik, Henneberger, Stephan, WEIDENMULLER, JONAS
Publication of US20170076891A1 publication Critical patent/US20170076891A1/en
Application granted granted Critical
Publication of US10020149B2 publication Critical patent/US10020149B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/21—Pc I-O input output
    • G05B2219/21108—Module, I-O module consisting of counters and comparators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures

Definitions

  • the invention relates to a control apparatus for controlling a switching element, preferably a mechanical relay, in accordance with claim 1 .
  • switching elements such as mechanical relays are used in a number of applications to control electrical devices connected via the switching elements.
  • the switching elements which are preferably mechanical, in this respect have a limited number of possible switching cycles which are comparatively low in comparison with non-mechanical switches such as transistors.
  • the switching elements are as a rule the weakest element in the grouping of a switching device, the expected service life under the given loads is of particular interest to plan servicing cycles for a plant or to make a statement on the duration of an error-free operation.
  • Such a possibility would also be of interest for simple switching devices such as relay modules which do not have any link to an intelligent logic such as a higher-ranking programmable logic controller PLC, whereby this function could be outsourced.
  • the known (safety) relay modules recognize a failure of the relay such as contact welding and block the restart.
  • the relay module subsequently has to be replaced.
  • the user's attention is not drawn to an (imminent) reaching of the expected switching cycles by the device. He is only informed of the failure. Alternatively, he has to take his own precautions.
  • a control apparatus for controlling a switching element, preferably a mechanical relay, having an operating unit for setting a load stage at which the switching element can be operated, having a control unit for calculating a first numerical value which reflects expected switching cycles of the switching element estimated on the basis of the set load stage (BS) and which corresponds to an expected service life of the switching element in dependence on the set load stage (BS), and for determining a second numerical value which reflects effected switching cycles of the switching element, with information being able to be drawn on by a user from a difference between the first and second numerical values or from a quotient from the second numerical value to the first numerical value during operation of the switching element.
  • BS set load stage
  • BS set load stage
  • the switching cycles of the switching element calculated and expected in dependence on the set load stage in the sense of the information in particular reflect a possible maximum total number of switching cycles of the switching element under the set load stage, with the effected switching cycles reflected by the second number not being included therein.
  • the operating unit is formed from a key, a key pad or a rotary switch.
  • the load stage can be calculated from a load current, a load voltage, a load type and/or an expected switching frequency in a provided application of the switching element.
  • the load stage to be set can be determined from numerical parameter values which can be drawn on by the user from a diagram and/or from an application-specific query in a data sheet.
  • the diagram advantageously comprises a current/voltage diagram with marked degrees of wear to which the switching element is exposed. The advantage thereby results that the user can see the load stage of the switching element to be set in a very simple manner in accordance with the degree of wear of the switching element in the application and can set it in the control apparatus.
  • the application-specific query queries an inductive load or an occurrence rate of a specific switching frequency by which the load stage for the switching element can be determined.
  • the load stage is numerically divided into a range, preferably from zero to six, with the load stage having a number which is as small as possible, in particular zero, corresponding to a highest possible number of switching cycles and with the load stage having a number which is as large as possible, in particular six, corresponding to a lowest number of switching cycles.
  • the information on the difference between the first and second numerical values reflects a still remaining residual service life of the switching element.
  • the information on the quotient from the second numerical value to the first numerical value reflects a percentage ratio between the already effected switching cycles and the expected switching cycles of the switching element.
  • a diagnosis mode can be selected by means of the operating unit in which the still remaining residual service life of the switching element can be displayed without any interruption of the operation of the switching element.
  • a display unit which displays the set load stage and the effected switching cycles.
  • the display unit advantageously displays information on the difference between the first numerical value and the second numerical value, in particular on the still remaining residual service life of the switching element.
  • the display unit advantageously displays the information on the quotient from the second numerical value to the first numerical value, in particular the percentage ratio between the already effected switching cycles and the expected maximum possible switching cycles.
  • control apparatus in accordance with the invention can be designed in a similar manner by further features and shows similar advantages in this respect. Such further features are described by way of example, but not exclusively, in the dependent claims following the independent claims.
  • FIG. 1 a schematic representation of a control apparatus in accordance with the invention
  • FIGS. 2 a -2 c a schematic, exemplary representation of a determination in accordance with the invention of a load stage of the switching element
  • FIGS. 3 a -3 b a schematic, exemplary representation of a display at the control apparatus in accordance with the invention.
  • FIG. 1 A schematic setup of a control apparatus 1 in accordance with the invention for controlling a switching element, in the form of a mechanical relay module, is shown in FIG. 1 to which an actuator A is connected by way of example, wherein the relay module 1 is supplied with input signals via an input line IN to switch the actuator A on or off via n output line OUT or to activate or deactivate a load circuit.
  • the preferred relay module 1 shown has an operating unit 2 which is provided for setting a load stage BS for the relay module 1 .
  • the load stage BS represents a load with which the relay module 1 is operated or loaded in its operation. I.e. the load of the relay module 1 depends inter alia on which kind of actuators A is connected to the relay module 1 , on how high a load current or a load voltage is switched onto the relay module 1 or on how frequently the relay module 1 has to be switched.
  • the operating unit 2 is formed in a preferred manner from a key, a key pad or a rotary switch so that a user can set the load stage BS at the relay module 1 in a very simple manner.
  • the operating unit 2 preferably comprises a rotary switch 2 at which the load stages BS are displayed such that the user can carry out the setting at the control apparatus 1 simply by rotating the indicator to the respective load stage BS after the determination of the correct load stage BS of the shown application for the control apparatus 1 in accordance with the invention.
  • the set load stage BS for the relay module 1 is advantageously likewise stored in the non-volatile memory.
  • the control unit CPU calculates a first numerical value Z 1 for expected switching cycles of the switching element at the set load stage BS on the basis of the set load stage BS, wherein the first numerical value Z 1 corresponds to an expected service life, in particular to a maximum service life, of the switching element in dependence on the set load stage BS.
  • a control unit CPU determines a second numerical value Z 2 which reflects effected switching cycles of the switching element.
  • the effected switching cycles can be counted by the control unit CPU and can be stored in a non-volatile memory which belongs to the control unit CPU of the control apparatus in accordance with the invention or of the relay module 1 .
  • the control unit CPU forms a difference from the first and second numerical values Z 1 and Z 2 or a quotient Z 2 /Z 1 from the second numerical value to the first numerical value Z 2 and Z 1 .
  • Information from the difference between the first and second numerical values Z 1 and Z 2 or from the quotients Z 2 /Z 1 from the second numerical value to the first numerical value Z 2 and Z 1 can be drawn on by the user during an operation of the switching element.
  • the information on the difference between the first and second numerical values Z 1 and Z 2 reflects a still remaining residual service life of the switching element which results from a comparison between the expected switching cycles or the expected service life of the switching element and the already effected switching cycles or the wear of the switching element.
  • the information on the quotient Z 2 /Z 1 from the second to the first numerical values Z 2 and Z 1 in turn reflects a percentage ratio between the already effected switching cycles or the wear of the switching element to the expected switching cycles of the switching element or of the maximum possible service life of the switching element.
  • FIGS. 2 a to 2 c A schematic, exemplary representation of a determination in accordance with the invention of the load stage BS of the switching element which can be set in the control apparatus 1 is shown in FIGS. 2 a to 2 c .
  • the load stage BS can be calculated from a load current, a load voltage, a load type and/or an expected switching frequency in a provided application of the switching element.
  • the load stage BS to be set can be determined from numerical parameter values Pzw 1 to Pzw 4 which can be drawn on by the user from a diagram and/or from an application-specific query in a data sheet.
  • control apparatus 1 After the determination of the load stage BS to be set, the control apparatus 1 can be set as described above and the switching element can be operated in accordance with the provided use.
  • the shown diagram in FIG. 2 a comprises a current/voltage diagram with marked degrees of wear of the switching element.
  • the X axis of the diagram represents a permanent current in amperes with which the relay module 1 is loaded.
  • the Y axis of the diagram represents the switching voltage in volts with which the relay module 1 is switched.
  • the area in the dashed rectangle of the switching voltage axis and of the permanent current axis is thus the degree of wear the switching element is exposed to. This degree of wear is divided by way of example into +1 to +4. I.e. the greater the switching voltage and the permanent current are, the greater the degree of wear is which acts on the switching element or the higher the load stage BS is which is to be set for the control apparatus in accordance with the invention or for the relay module in accordance with the invention.
  • wear of the switching element is the smallest at +1 and the wear of the switching element is correspondingly the largest at +4.
  • the user can see the first numerical parameter value Pzw 1 from the current/voltage diagram.
  • the user can determine further numerical parameter values Pzw 2 to Pzw 4 to be taken into account for the determination of the load stage BS for the use of the control apparatus 1 in accordance with the invention from the exemplary, application-specific queries shown in FIG. 2 b.
  • the queries can be stored in a data sheet of the control apparatus 1 in accordance with the invention so that the user can read off the matching numerical parameter value Pzw 2 to Pzw 4 or it can be displayed at the control apparatus 1 in accordance with the invention so that the user can input the matching numerical parameter value Pzw 2 to Pw 4 by means of the operating unit 2 .
  • the control apparatus 1 in accordance with the invention has a display unit 3 which displays the application-specific queries to the user so that the user can input the correct numerical parameter value Pzw 2 to Pzw 4 with respect to the respective application-specific query by means of the operating unit 2 to obtain the correct load stage BS.
  • the display unit 3 advantageously shows the set load stage BS, the maximum possible switching cycles dependent on the set load stage BS and the effected switching cycles.
  • the display unit 3 in particular also serves to display the information on the difference between the first and second numerical values Z 1 and Z 2 , i.e. the still remaining residual service life of the switching element, or the information on the quotient Z 2 /Z 1 from the second to the first numerical value Z 2 and Z 1 , i.e. the percentage ratio between the wear and the maximum possible service life of the switching element.
  • the user can see the still remaining residual service life of the switching element during the operation of the control apparatus 1 in accordance with the invention or of the relay module without interrupting the operation of the switching element in that the user preferably selects a diagnosis mode and allows the information from the difference between the first and second numerical values Z 1 and Z 2 or, as shown in FIGS. 3 a and 3 b as bars, the information from the quotients Z 2 /Z 1 from the second numerical value to the first numerical value Z 2 and Z 1 to be displayed at the display unit 3 .
  • the user can respond with respect to the load type, namely “Inductive load?” or “Direct current?”.
  • a numerical parameter value Pzw 2 equal to two (Yes: +2) is set and on a Yes response to the query with respect to the direct current, a numerical parameter value Pzw 4 equal to one (Yes: 1) is set.
  • the numerical parameter values Pzw 2 and Pzw 4 are set equal to zero (No: +0).
  • a further application-specific query asks for the number of occurrences of an incidence of a switching frequency at which the control apparatus 1 in accordance with the invention is operated or the switching element is switched. It is determined in this respect whether a switching frequency greater than 0.5 Hz occurs more frequently. On a Yes response to the query with regard to the number of occurrences of the switching frequency greater than 0.5 Hz, a numerical parameter value Pzw 3 equal to one (Yes: +1) is set and on a No response, the numerical parameter value Pzw 3 equal to zero (No: +0) is set.
  • the application-specific query queries an inductive load or the number of occurrences of a specific switching frequency by which the load stage BS for the switching element can be determined.
  • the numerical parameter values Pzw 1 to Pzw 4 determined by the user are summed, from which the load stage BS to be set for the control apparatus 1 in accordance with the invention is determined in the corresponding application.
  • the application-related load stage BS determined in this manner can be set such that the control unit CPU calculates the information relating to the still remaining residual service life of the switching element and can provide it to the user.
  • FIGS. 3 a and 3 b A respective schematic, exemplary representation of the display unit 3 is shown at the control apparatus 1 in accordance with the invention in FIGS. 3 a and 3 b .
  • the already effected switching cycles (“70,150 or “100,150”) and the set load stage BS (“2”) are displayed for the user on the display unit 3 .
  • the load stage BS is preferably numerically divided into a range from 0 to 6.
  • the load stage BS equal to zero (“0”) corresponds to a number of switching cycles which is as high as possible.
  • the load stage BS equal to six (“6”) corresponds to a lowest number of switching cycles.
  • the relay module in accordance with the invention is loaded the least in operation, whereas at the load stage BS equal to six, the relay module in accordance with the invention is loaded the most in operation.
  • the user can see the still remaining residual service life of the switching element using the displayed information from the difference between the effected switching cycles (10,150 or 100,150) of the switching element and the expected switching cycles (135,000) of the switching element dependent on the load stage BS or using the displayed bar of the information on the quotient Z 2 /Z 1 from the effected switching cycles (70,150 or 100,150) to the maximum possible switching cycles (135,000) of the switching element.
  • the information of the display in FIG. 3 a indicates to the user that the relay module is still in a good condition since a consumed service life of the switching element is a little above half the expected (maximum) service life of the switching element at the load stage equal to two. It is advantageous in this respect that the shown bar displays the information from the quotient Z 2 /Z 1 from the second to the first numerical values Z 2 and Z 1 in percent. The user can hereby read off the percentage wear of the switching element with respect to the maximum possible service life of the switching element. The user can, in contrast, see from the information of the display in FIG. 3 b that a wear of the switching element is already significantly high so that a replacement of the switching element should be carried out soon.
  • the user thus obtains an overview on the wear of the switching element in accordance with the invention at any time directly at a machine having the control apparatus 1 in accordance with the invention and can carry out a servicing of the relay module in a time and cost optimized manner.
  • the user acquires the information that, if the switching element has been operated for one year at the load stage BS equal to two (“2”), the switching element can be operated for still almost a further one year at 70,150 switching processes effected up to then since the wear is just a above half the expected maximum possible service life of the switching element.
  • the servicing or the replacement of the switching element can therefore be planned in a time and cost optimized manner.
  • the user can change the load stage BS by means of the operating unit 2 , for example in accordance with a change of the application, so that the control unit CPU can determine the first numerical value Z 1 again which corresponds to the newly set load stage BS.
  • the control unit CPU can determine the first numerical value Z 1 again which corresponds to the newly set load stage BS.
  • the newly obtained information from the difference between the first and second numerical values Z 1 and Z 2 or the information from the quotient Z 2 /Z 1 from the second to the first numerical values Z 2 and Z 1 indicates to the user how high the already consumed service life or the percentage wear of the switching element is while taking account of the newly set load stage BS and, on the other hand, whether a further operation of the relay module is economic under the new load stage BS or whether a replacement should be carried out immediately or in the near future.
  • the result may therefore advantageously arise in the new calculation that the display unit 3 indicates 100% as the information. This means that with the set new load stage BS a failure of the relay module would result in the direct future so that it would be advisable not to operate the already used and thus worn switching element under the newly set load stage BS or in accordance with the new application.
  • the user is given the possibility to avoid a failure of the switching element in operation under the new application in advance in that he replaces the used switching element with a new switching element which is more suitable for the newly set load stage BS of the new application.
  • the display of the information at the display unit 3 can furthermore in particular change faster if the newly set load stage BS is a higher load stage BS.
  • the control apparatus 1 in accordance with the invention displays a large interval between the already consumed service life of the switching element and the newly expected (maximum) service life of the switching element so that a corresponding servicing time can be displaced backward in time.
  • the user hereby obtains a higher planning certainty for the service of the switching element.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Relay Circuits (AREA)
  • Programmable Controllers (AREA)
US15/248,456 2015-09-11 2016-08-26 Control apparatus for controlling a switching element Active 2037-03-16 US10020149B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15184905.6 2015-09-11
EP15184905.6A EP3142136B1 (de) 2015-09-11 2015-09-11 Steuerungsvorrichtung zum steuern eines schaltelements
EP15184905 2015-09-11

Publications (2)

Publication Number Publication Date
US20170076891A1 US20170076891A1 (en) 2017-03-16
US10020149B2 true US10020149B2 (en) 2018-07-10

Family

ID=54145621

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/248,456 Active 2037-03-16 US10020149B2 (en) 2015-09-11 2016-08-26 Control apparatus for controlling a switching element

Country Status (3)

Country Link
US (1) US10020149B2 (de)
EP (1) EP3142136B1 (de)
CN (1) CN106527251B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10955477B2 (en) 2018-06-29 2021-03-23 Hamilton Sundstrand Corporation Power distribution health management and monitoring
DE102018217336A1 (de) * 2018-10-10 2020-04-16 Siemens Aktiengesellschaft Restlebensdauervorhersage für Schalter
US11362538B2 (en) * 2020-01-31 2022-06-14 Schneider Electric It Corporation Uninterruptible power supply component analysis system and method
FR3155947A1 (fr) * 2023-11-24 2025-05-30 Airbus Operations (S.A.S.) Dispositif de commutation électrique d’un circuit électrique de puissance comportant un système de maintenance prédictive

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193732A1 (de) 1985-02-20 1986-09-10 Licentia Patent-Verwaltungs-GmbH Überwachungs- und Kontrolleinrichtung für Schaltgeräte und Schaltgerätekombinationen
WO2005104155A1 (de) 2004-04-21 2005-11-03 Siemens Aktiengesellschaft Verfahren zum ermitteln eines eine abnutzung von schaltkontakten eines leistungsschalters angebenden restschaltspiel-wertes
DE102011100305A1 (de) 2010-05-28 2011-12-01 Magna Steyr Fahrzeugtechnik Ag & Co Kg Verfahren und Vorrichtung zur Bestimmung eines die Abnutzung eines Relais kennzeichnenden Parameters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045095A1 (de) * 2005-09-21 2007-04-05 Siemens Ag Verfahren zum Bestimmen des Abbrandes von Kontakten eines elektromagnetischen Schaltgerätes und elektromagnetisches Schaltgerät mit einer nach diesem Verfahren arbeitenden Einrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193732A1 (de) 1985-02-20 1986-09-10 Licentia Patent-Verwaltungs-GmbH Überwachungs- und Kontrolleinrichtung für Schaltgeräte und Schaltgerätekombinationen
WO2005104155A1 (de) 2004-04-21 2005-11-03 Siemens Aktiengesellschaft Verfahren zum ermitteln eines eine abnutzung von schaltkontakten eines leistungsschalters angebenden restschaltspiel-wertes
DE102011100305A1 (de) 2010-05-28 2011-12-01 Magna Steyr Fahrzeugtechnik Ag & Co Kg Verfahren und Vorrichtung zur Bestimmung eines die Abnutzung eines Relais kennzeichnenden Parameters

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
European Search Report dated Feb. 29, 2016 corresponding to European application No. 15184905.6-1808.
SIPROTEC Numerical Overhead Contact Line Protection for AC Traction Power Supply 7ST6 Manual; V4.6; Nov. 9, 2012; Siemens Aktiengesellschaft.

Also Published As

Publication number Publication date
EP3142136A1 (de) 2017-03-15
US20170076891A1 (en) 2017-03-16
CN106527251A (zh) 2017-03-22
CN106527251B (zh) 2019-04-12
EP3142136B1 (de) 2018-07-18

Similar Documents

Publication Publication Date Title
US10020149B2 (en) Control apparatus for controlling a switching element
CN106462133A (zh) 自动化操作和管理系统
US9952286B2 (en) Power-supply control device and programmable logic controller
US9869727B2 (en) Arrangement and method for monitoring a power supply
US20080086649A1 (en) Power Supply Device
CN117222900A (zh) 用于识别机电装置的磨损的装置和方法
US12072720B2 (en) Method for monitoring and controlling a current distribution in an installation
CN106030954A (zh) 电力需求控制装置、电力需求控制方法、电力需求控制系统、程序及记录介质
CN112445176B (zh) 监视设施控制系统在正常运行条件下的作用方式的方法
US10186390B2 (en) Relay circuit for contact preservation and method for controlling relay circuit
US20160258841A1 (en) Data measuring device switching communication destination for measuring physical data
JP2016095770A (ja) コントローラ、およびこれを用いた冗長化制御システム
US11101091B2 (en) Modular safety relay circuit for the safe switching on and/or off of at least one machine
CN113126571B (zh) 电力传动装置健康诊断系统、方法及中央控制装置
KR100986004B1 (ko) Ｐｌｃ 시스템의 지능형 입출력 모듈
JP6415485B2 (ja) 動力設備システムおよび動力設備システムの制御方法
KR20080078490A (ko) 고장 진단 기능을 가지는 디지털 입출력 모듈
JP2000222993A (ja) 累積遮断電流カウンタおよび遮断器
JP4749021B2 (ja) 監視制御装置
KR20250072209A (ko) 공작기계 절삭유 펌프 모터제어용 전자접촉기 수명예측 시스템 및 그 제어방법
US9983608B2 (en) Output module for programmable controller
KR20170009703A (ko) 라인 시스템
JP5885155B2 (ja) バックアップ装置およびバックアップ方法
CN203338024U (zh) 电动执行机构控制装置
CN110725366A (zh) 一种多泵供水控制系统、方法及装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: SICK AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DOLD, FRANZ;WEIDENMULLER, JONAS;HENNEBERGER, STEPHAN;AND OTHERS;SIGNING DATES FROM 20160724 TO 20160816;REEL/FRAME:039563/0700

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8